True or False? "Fractions must have common denominators to be able to add or subtract them"

Answers

Answer 1

Answer:

true

Step-by-step explanation:


Related Questions

Q2. In a school, 60% of the students are girls. 50% of the girls walk to school. 20% of the boys walk to school. What percentage of the students walk to school?​

Answers

Answer:

38%

Step-by-step explanation:

60 percent girls

50 percent of girls walk

50 percent take the bus

40 percent boys

20 percent walk

80 percent take the bus

If there are 100 people in the school

60 girls

30 girls take the bus

40 boys

8 boys walk

8+30=38

38% of the people walk to school

plz help :-)

The perimeter of an equilateral triangle is 9n - 12. Write an expression to represent the length of each side.​

Answers

Answer:

[tex]9n - 12 \rightarrow \frac{1}{3} (9n - 12) \\ = \frac{3}{3} (3n - 4) \\ l = 3n - 4[/tex]

Question:

The perimeter of an equilateral triangle is 9n - 12. Write an expression to represent the length of each side.

Solution:The perimeter of an equilateral triangle is 9n - 12.We know, perimeter of a triangle is the sum of the three sides of the triangle.Also, in an equilateral triangle, all the sides are equal.Therefore, the length of each side of the triangle

[tex] = \frac{9n-12}{3} \\ = \frac{3(3n - 4)}{3} \\ = 3n - 4[/tex]

Answer:

The length of each side of the triangle is 3n-4.

Hope it helps!!

The following represents slopes of two lines. Which answer choice describes the two lines? m = 7 and m = -7

Answers

Answer:

m = 7 can also be y=7x+1 is positive and shows acceleration or ascending lines steep y axis 1 and x axis 0 ascending to 1 or above and when y = 7  x =1 see attached.

m = -7 is negative and shows deceleration of 1 as we add 1 here too. Or can be any number for y intercept see attached.

Step-by-step explanation:

Answer:
The slopes of two lines are given as:

m = 7
m = -7

A line with a positive slope of 7 rises as it moves to the right, and a line with a negative slope of -7 falls as it moves to the right.

Therefore, the two lines have slopes that are opposite in sign and have the same magnitude. This means they are two straight lines that are mirror images of each other, reflected across the x-axis.

Graphically, they would look like this:

yaml

^
|
|
|
------ + ------ (m = 7)
|
|
|
v

v
|
|
|
------ + ------ (m = -7)
|
|
|
^

Therefore, the two lines are parallel to each other and have a distance between them


I rlly need help im failing in math out report cards are Wednesday on top of that my birthday is October 25 help me please

Answers

Answer:

Number 4 is -5 I believe

Solve the formula c = 5p + 215 for p

Answers

Answer:

1/5c -43 =p

Step-by-step explanation:

c = 5p + 215

Subtract 215 from each side

c-215 = 5p +215-215

c-215 = 5p

Divide each side by 5

c/5 -215/5 = 5p/5

1/5c -43 =p

Denilys has $186.44 saved in her piggy bank. She
saw a pair of jeans for $49.89 and a pair of
earrings for $24.58 that she couldn't live without.
How much money will she still have in her piggy
bank after she buys her jeans and earrings?

Answers

Answer:

$111.97

Step-by-step explanation:

Number 19 please and thank you.

Answers

Answer: Sir/Ma´am/Person, it doesnt show.

Step-by-step explanation: Im on an computer and it wont show, ive tried putting it in different tabs..nothing seems to be functional. Maybe its my computer? If it isnt, heres a heads up: it could be a unrecognized file if thats what it told you somehow before you did that?  But thats all i wanted to type. Enjoy your day.

solve y
y=8x-x^2
y=2x
STEP BY STEP SOLUTION PLEASE HELP

Answers

Answer:

y=12

Step-by-step explanation:

y=2x ,so 2x=8x-x^2

x^2=8x-2x

x^2=6x

x^2/x=6x/x

x=6

y=2x ,2(6)

y=12

Hiiii!!!! Can you solve this please?​

Answers

I think the answer is 32 maybe

Solution:

The area of the shape

= (3×2)+(3×2)+(10×1)

= 6 + 6 +10

= 22

The answer is 22.

-0.1b = 3.8, what is b?

Answers

-0.1b = 3.8   ; Get b alone

3.8 / -0.1 = -38  ; Turns negative, and 3.8 / 0.1 = 38

b = -38

Help!! Please!!!! Please show your work!

Answers

Answer:

N/A

Step-by-step explanation:

We should first simplify the right side, and doing so will get x/3+6=x/3+10. WE then subtract x/3 on both sides to get 6=10. Since this cannot be true, there are no solutions.

Answer:

no solution

Step-by-step explanation:

[tex]\frac{x}{3}[/tex] + 6 = 2([tex]\frac{x}{6}[/tex] + 5) ← distribute parenthesis by 2

[tex]\frac{x}{3}[/tex] + 6 = [tex]\frac{x}{3}[/tex] + 10 ( subtract 6 from both sides )

[tex]\frac{x}{3}[/tex] = [tex]\frac{x}{3}[/tex] + 4 ( subtract [tex]\frac{x}{3}[/tex] from both sides )

0 = 4 ← False statement

This indicates the equation has no solution

Which of the following are techniques you have learned so far for solving a
quadratic equation?
Check all that apply.
O A. Solve by taking the square root of both sides
B. Solve by factoring
C. Solve by substitution
I D. Solve by forming sums of squares

Answers

The techniques you have learned so far for solving a quadratic equation are solve by factoring and solve by substitution

What are quadratic equations?

Quadratic equations are expressions that have a leading degree of 2.

In order to solve factorization, the following streps are crucial

Solve by factoring: This is a way of factoring the GCF in the grouped functions.

It can also be solved by substitution: Using the general formula, the coefficients are substituted to determine the zeros

Learn more on quadratic function here: https://brainly.com/question/25841119

#SPJ2

Answer:it is solve by factoring and solve by taking the square root of both sides!

Step-by-step explanation:

A weather balloon ascends 6 meters every second.
How far will it ascend in 120 seconds?
Enter the your answer in the box.
m

Answers

Answer:

720

Step-by-step explanation:

6x120

6*120 = 720

The answer is 720 because if the balloon goes up 6 meter per second and it keeps on going for 120 seconds then after 120 seconds it will be 720 meters up in the air.

Answer= 720 meters

I NEED HELP!!! PLS DUE TODAY!!!
I need to make this word problem a division word problem.

Emma had 2 1/4 of jelly beans. She ate 1/4 of them.

Answers

Answer:

2 1/4 divided by 1/4

or

9/4 divided by 1/4

Step-by-step explanation:

Answer:

2 1/4 / 1/4 = ?

Step-by-step explanation:

ok so

2 1/4 / 1/4

(jelly beans / how much she ate)

Round 7412 to the nearest thousand.

Answers

Answer:

7000

Step-by-step explanation:

below 7500 means 7000

100 points and brainliest to the first correct answer
I've done the work but I need to know what my new coordinates will be

Here's the question
Use the mapping (x+3, y-5), for the transformation of triangle ABC with vertices A(-2, -4), B(0, 0), and C(1, -3), find the coordinates of the new triangle A’B’C’ . You must show all your work.
And then here is the answer

You’re going to go left side three points and down five for every point on the graph (ABC) and once you do that label the ABC marks with an apostrophe like so; A’B’C’ for every time you change places


What will be my new coordinates??

Answers

okokokokooo ansnwer is?!??

Same question here answered by me correctly

Visit the link below for your answer.

https://brainly.com/question/25027288?


What is the perimeter of WXYZ?

Answers

im pretty sure the answer is 59

Point V is on the line segment UW. Given VW=5x-4, UV=2x, and UW=5x, determine the numerical length of VW

Answers

So UV+VW=UW
Or 2x+5x-4=5x
So 7x-4=5x
This means that x is generally a low amount as x has to be less than 3 (as 3x7, 21-4=17 and 3x5=15.)
I then tried to input 2 and got 14-4=10 which is correct.
So x=2
We then input x=2 into 5x-4 for the answer.

5(2)-4
10-4
6

The final answer is 6

pls helppp it's due after 30 min

* Find the cast price of the following: a) selling price 55 profit 10% c) selling price $680, loss 15% b) selling price $558, profit 24% d) selling price $11.78, loss 5%​

Answers

Step-by-step explanation:

• C. P = Cost Price.. , S. P (Sell Price) ,

→ C.P = 100×S.P/100+Profit (when profit)

(a) C.P = 100 × 55/100 + 10 = 5500/110

C.P » $ 50(b) C.P = 100 × 558/100+24 = 55800/124

C.P » $ 450→ C. P = 100 × S.P/100 - loss (when loss)

(c) C. P = 100 × 680 / 100 - 15 = 68000/85

C. P » $ 800

(d) C. P = 100 × 11.78 / 100 - 5 = 1178/95

C. P » $ 12.4

Name 3 points that are coplanar

Answers

G I H… I think
Coplanar is when they are the same plane so i don’t know what else it could be

Find values of a, b, and c that make each statement true.
If no values exist, write not possible.

a. a< b and a +<< b + c

b. a< b and a +c>b+c

c. a< b and ac < bc

d. a bc

e. a< b and ac=bc

Answers

Answer:

Find values of a, b, and c that make each statement true.

Find values of a, b, and c that make each statement true. If no values exist, write not possible.

ANSWER: A

Step-by-step explanation:

hope it's helpful

The length of a side of a square is 4x – 1.
Express the area of the square in terms of x.

Answers

Answer:

16x^2 - 8x + 1

Step-by-step explanation:

1. The area of a square can be represented as s^2 or (s)(s), where s = side.

2. (Solving)

Step 1: Set up expression

[tex](4x-1)^2[/tex] [tex](4x-1)(4x-1)[/tex]

Step 2: Apply the FOIL method (first, outside, inside, last)

[tex](4x)(4x)+(4x)(-1)+(-1)(4x)+(-1)(-1)[/tex] [tex]16x^2 -4x -4x +1[/tex]

Step 3: Simplify.

[tex](16x^2)+(-4x-4x)+(1)[/tex] [tex]16x^2 -8x + 1[/tex]

Therefore, the area of the square in terms of x is 16x^2 - 8x + 1.

help pls!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

7

Step-by-step explanation:

you do it and the answer should be 7


will brainly come in clutch???

Answers

Answer:

32

Step-by-step explanation:

to form a linear pair means when the two angles are added, they equal 180 degrees

3x + 20 + x + 32 = 180

4x + 52 = 180

4x = 128

x = 32

when 7 is added to 3 times a number, the sum is multiplied by 2 and 15 is subtracted what is the final answer

Answers

Answer:

2(3x+7) -15

Step-by-step explanation:

Let x = unknown number

7 is added to 3 times a number

3x+7

Multiply the sum by 2

2(3x+7)

Subtract 15

2(3x+7) -15

Answer:

Let the required number be " x "

Now, 7 is added to 3 times a number : (3x + 7)

Next, the sum is multiplied by 2 : 2(3x + 7)

And then, 15 is substracted from it : 2(3x + 7) - 15

2(3x + 7) - 15 is the final answer.

PLEASE HELP :)
The value of a polynomial is 0 when x = -8
What expression must be a factor of the polynomial?

Answers

Answer:

Wait, could you explain

Step-by-step explanation:

Can someone please help

Answers

Answer: f(x)=3 x=2, f(x)=5 x=5/2, f(x)=-3 1/2

Step-by-step explanation:

Plug in the number that f(x) equals into the f(x) in the equation for each value

If a dozen eggs cost $1.35, what does the unit cost?

Answers

$0.11 You’re welcome

HELP PLSSS THIS IS HARD ANYONE

Answers

i think it is c)

but if it's wrong pls don't report me

and tell me waht is correct answer....

Ms. Sublett's math class is putting three numbers (0.3, 1/4, and 20%) in order from least to greatest. What order should the numbers be from least to greatest?

Answers

Answer:

least to greatest

20% , 1/4, 0.3

20% = 1/5 = 0.2

0.3 = 3/10 = 30%

1/4 = 25% = 0.25

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